Impeller:aluminum,Motor coil:aluminum/copper, Bearing:home/C&U,Shaft with Rotor:45#,AIS304,220v/50hz110v/60hz. submersible pump:Two –pole induction motor (n=2850r.p.m)Insulation class BProtection IP45Material:Motor casing:AluminumImpeller: Brass or aluminum or plastic.Motor coil:copper/ aluminumCertificate:CE,GS,EMS,CCC,ISO9001,ISO2000Customer from america,europe,australia and southeast Asia ...